Arkys walckenaeri, the triangular spider or Walckenaer's studded arkys, is a common Australian spider belonging to the family Arkyidae. Its triangular abdomen resembles the heart-shape and its bold colours make it one of Australia's most photographed spiders.
Small to medium-sized, females averaging 6mm and males averaging 4mm. They are an ambush hunter on foliage, waiting with outstretched arms for insects and other arthropods to come wthin range. Is junoir synonym A. clavatus means studded with nails, referring to the pattern on the abdomen.
Fun fact: The egg sac is pear-shaped, 10mm long and containing around 50 golden yellow eggs, diameter 0.8mm.